Scooping up a prominence: embedding a filament in a CME
Abstract
We report on thermodynamically consistent magnetohydrodynamic simulations from chromosphere to corona, where an erupting flux rope gets formed by photospheric converging motions. Our model shows how chromospheric material can get levitated into the flux rope and form a filament. The flux rope-filament system transits from quasi-equilibrium stages to an accelerated eruption, and this transition coincides with a changeover in the reconnection occurring in the current sheet underneath the flux rope. A slow Sweet-Parker stage transforms to an unsteady bursty reconnection regime with multiple islands. The largest of these islands are seen to merge with the chromospheric fields below to produce flare arcade loops. Our simulation unifies a variety of processes, from small-scale reconnection structures up to full-scale embedded filaments in a coronal mass ejection.
- Publication:
-
42nd COSPAR Scientific Assembly
- Pub Date:
- July 2018
- Bibcode:
- 2018cosp...42E1737K